Ulsan HD U15: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2024-01-01 | Ju-ho Choi | Ulsan HD U15 | Ulsan HD U18 | — |
| 2021-01-01 | Ju-ho Choi | Pyeongtaek JS | Ulsan H. U15 | — |
| 2020-01-01 | Jae-hyeon Kim | Ulsan H. U15 | Ulsan H. U18 | — |
| 2020-01-01 | Do-hyun Kim | Ulsan H. U15 | Ulsan H. U18 | — |
| 2019-01-01 | Seok-hyeon Choi | Ulsan H. U15 | Ulsan H. U18 | — |
| 2018-01-01 | Se-jin Park | Ulsan H. U15 | Saha MS | — |
| 2018-01-01 | Min-ho Kim | Ulsan H. U15 | Pohang St. U15 | — |
| 2018-01-01 | Ji-ho Lee | Ulsan H. U15 | Ulsan H. U18 | — |
| 2018-01-01 | Jae-won Lee | Ulsan H. U15 | Ulsan H. U18 | — |
| 2017-01-01 | Se-jin Park | Ulsan Hy. Yth. | Ulsan H. U15 | — |
| 2017-01-01 | Jae-joon An | Ulsan H. U15 | Ulsan H. U18 | — |
| 2017-01-01 | Jae-hyeon Kim | Ulsan Hy. Yth. | Ulsan H. U15 | — |
| 2017-01-01 | Jae-hwan Hwang | Ulsan H. U15 | Ulsan H. U18 | — |
| 2017-01-01 | Do-hyun Kim | Buyang ES | Ulsan H. U15 | — |
| 2016-01-01 | Seok-hyeon Choi | Shinyongsan ES | Ulsan H. U15 | — |
| 2016-01-01 | Min-ho Kim | Ulsan Hy. Yth. | Ulsan H. U15 | — |
| 2016-01-01 | Jeong-in Park | Ulsan H. U15 | Ulsan H. U18 | — |
| 2016-01-01 | Gi-hyuk Lee | Ulsan H. U15 | Ulsan H. U18 | — |
| 2015-01-01 | Se-hun Oh | Ulsan H. U15 | Ulsan H. U18 | — |
| 2015-01-01 | Ji-ho Lee | JangSan ES | Ulsan H. U15 | — |